The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2006
Filed:
Nov. 08, 2002
Mitsuaki Mochizuki, Saitama, JP;
Michihisa Shimizu, Saitama, JP;
Tsunehiro Kawata, Saitama, JP;
Masao Murakawa, Saitama, JP;
Mitsuaki Mochizuki, Saitama, JP;
Michihisa Shimizu, Saitama, JP;
Tsunehiro Kawata, Saitama, JP;
Masao Murakawa, Saitama, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
The permanent magnetic alloy of the present invention comprises an R—Fe—B alloy wherein R is at least one element selected from rare earth elements including Y. The R—Fe—B alloy has a composition mainly comprising Fe, substantially containing no N, and containing 4 at. % or more of B. The permanent magnetic alloy substantially comprises a TbCuhard magnetic phase (main phase) and a fine crystal having an average crystal grain size of less than 5 nm and/or an amorphous phase, and has high magnetic properties.